| A straightforward and practical method for integrating highly active Sm0.5Sr0.5CoO3 into a conventional La0.6Sr0.4Co0.2Fe0.8O3–Gd0.2Ce0.8O2 composite cathode |
| Seol Hee Oh1, Sun-Young Park2, Sewon Kim1, Kyung Joong Yoon1, Hyeong Cheol Shin3, Kyoung Tae Lim3, Jong-Ho Lee1,4 |
1Energy Materials Research Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
2Technology Support Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
3Kceracell Co. Ltd., Chungcheongnam-do, 32701, South Korea
4Division of Nanoscience and Technology, University of Science and Technology, Seoul, 02792, South Korea |
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Received: June 7, 2023; Revised: August 9, 2023 Accepted: August 25, 2023. Published online: September 14, 2023.
*Seol Hee Oh and Sun-Young Park contributed equally to this work. |
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| ABSTRACT |
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The Sm0.5Sr0.5CoO3 (SSC) material is widely recognized as the most electrochemically active cathode material for solid oxide fuel cells (SOFCs). However, due to its poor thermo-mechanical and chemical compatibility with other cell components of the SOFC, it has been challenging to implement it as a cathode material. To address this issue, this study explores various architectural configurations of cathode, including layered and composite type structures, to identify the optimal approach to incorporating SSC material for enhanced SOFC performance. The study reveals that the most effective method of incorporating SSC material is through a mixture with the conventional La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) and Ce0.9Gd0.1O2 (GDC) composite cathode materials. In particular, when the sinterability of GDC is enhanced through the addition of a sintering aid, it exhibits superior adhesion with the neighboring interfaces, which results in the highest performance characteristics while simultaneously maintaining excellent structural stability. |
| Key words:
Solid oxide fuel cells · Sm0.5Sr0.5CoO3 · Cathode · Cathode functional layer · High performance |
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